Thyroid 4b generally refers to thyroid nodule 4b, which is graded under thyroid ultrasound, and the risk of malignancy of thyroid nodule 4b is generally in the range of 10%~50%, which indicates that the possibility of benign after performing thyroid puncture is still more than one, but whether it belongs to malignant or benign should be subject to the final results of the examination. According to the TI-RADS classification of thyroid nodules, thyroid nodule 4b belongs to the suspected malignant nodule, and the risk of malignancy is 10%~50%, so it can be learned that the possibility of benign after thyroid puncture is still more. However, thyroid nodule 4b is still a suspected malignant nodule, so there is also a possibility that the nodule may be malignant, and it should not be taken lightly, and whether it is malignant or benign should be subject to the final test results. Patients diagnosed with thyroid nodule 4b should cooperate with the doctor’s treatment, and those who need to undergo thyroid puncture should cooperate with the doctor’s operation process.